| A | B |
|---|
| Bacteria and fingi are known as ___________ because they break down the remains of organisms. | decomposers |
| The soil that is frozen all year in the tundra is called _____________ | permafrost |
| Water vapor turns into droplets of liquid water in the process of _____________ | condensation |
| Small, light organisms such as baby spiders can be dispersed by ______________ | wind |
| Certian bacteria change nitrogen gas into a usable form in a process called __________________ | nitrogen fixation |
| The energy role of a grizzley bear is that of a(n) ________________ because it cannot make its own food. | consumer |
| A diagram called a(n) _____________________ shows how much energy is available at each level of a food web. | energy pyramid |
| The energy role of the first organism in a food chain is always a(n) ______________ | producer |
| An organism that eats only plants is a(n) ____________ consumer | first level |
| Water from a lake changes to the gas state in the process of ________________ | evaporation |
| Producers use carbon form the gas _______________________________ to make sugars and starches. | carbon dioxide |
| Themperature and precipitation determine an area's _____________, which can limit dispersal of organisms. | climate |
| The _______ biome receives less than 25 centimeters of rain a year and may have large temperature shifts every day. | desert |
| The neritic zone over the continental shelf is part of the ___________ ecosystem. | Marine |
| A bird eating berries and depositing the seeds in its wastes is an example of _____________ | dispersal |
